However, body language more accurately conveys intense emotions than facial expressions, according to Hebrew University’s Hillel Aviezer,Yaacov Trope of NYU, and Princeton University’s Alexander Todorov.
Three groups of 15 people judged intense emotions, including pain, pleasure, victory, defeat, grief and joy, portrayed in stock photographs of:
- facial expressions alone or
- body language alone or
- both facial and body expressions.
Volunteers assigned more accurate inferences of pictured emotion based on body language, alone or combined with facial expressions, than judgments based on facial context alone.
These results challenge presumption that the face best communicates feeling, yet most participants believe that they rely on facial expression was their most important cue in making inferences.
More than half the volunteers reported that they use facial expression to judge underlying emotions, a bias labeled “illusory facial affect” by Aviezer and team.
Some participants did not view the photos, but heard a description of the content.
The vast majority – 80 percent – said they “would” rely solely on the face when determining the emotion.
The remainder said they would consider the face and body together, yet not one participant indicated that body language alone would be the most important guide to emotion.
Another experiment presented volunteers with altered photos that combined one intense emotional expressed in the face with an opposing “peak” emotion portrayed by the body language.
Volunteers more often judged the emotion associated with the body, although they thought that facial expression was more indicative of underlying emotional experience.
A different condition demonstrated that most participants provided inaccurate judgments of six emotional states portrayed by faces alone: They judged positive facial expressions as negative more frequently than the actual negative expressions.
Aviezer, Trope, and Todorov argue that facial expressions can be ambiguous and subjective when viewed without the context of body, particularly during intense emotional expressions.
Jamin Halberstadt of University of Otago explained Team Aviezer’s findings by noting “…bodily context is the expression of emotion…the face reveals a general intensity of feeling but doesn’t communicate what the person is feeling exactly. The body is where the valid information comes from during intense feelings.”
His expertise is based on earlier research with University of California at San Diego’s Piotr Winkielman, Paula Niedenthal of University of Wisconsin and University of Clermont-Ferrand’s Nathalie Dalle.
They demonstrated the important role of expectancy in reading, experiencing, and recalling emotions expressed by ambiguous facial photographs.
Halberstadt’s team used electromyography (EMG) to evaluate volunteers’ muscle mimicry responses and memory of photos portraying ambiguous faces when associated with emotion labels like “angry” or “happy”, and when the same photos were presented without labels.
Participants displayed more EMG activity associated with smiling when they viewed faces labeled “happy” than “angry,” and remembered faces labeled “happy” as happier than faced coded “angry” even though the photographed expressions were ambiguous.
When participants spontaneously mimicked emotions labeled with a specific affect label, they were more likely to remember this emotion.
Since the photos were ambiguous, this recall represents memory bias, based on expecting, then mirroring an expected emotion.
One example is the U.S. Transportation Security Administration’s Screening of Passengers by Observation Techniques (SPOT) program, which was based on Ekman’s facial expression research, but did not account for bodily expression as an indicator of underlying emotion.
Team Aviezer’s findings argue that emotion-screening procedures, as well as everyday workplace interactions, should evaluate both cues from both the body and the face to form most accurate judgments of others’ likely emotional states.
-*Which cues do you find most helpful in judging other people’s emotional states when interacting with them?
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